Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Also, on December 15, Monson sells 28 units for $25 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 18 units @ $10.00 cost 35 units @ $15.00 cost 28 units @ $18.00 cost Required: Monson sells 28 units for $25 each on December 15. Monson uses a perpetual inventory system. Determine the costs assigned to the December 31 ending inventory when costs are assigned based on LIFO. Perpetual LIFO: Goods purchased Cost of Goods Sold Inventory Balance Cost of Goods Cost per Available for Date # of units # of units sold Cost per cost of goods unit Sold # of units Cost per unit Inventory Balance unit Sale December 7 December 14 = $ 0.00 $ 0.00 December 15 December 21 | = $ 0.00 Totals